diff --git a/.github/workflows/security_audit.yml b/.github/workflows/security_audit.yml
index 851601c..df91a73 100644
--- a/.github/workflows/security_audit.yml
+++ b/.github/workflows/security_audit.yml
@@ -18,13 +18,13 @@ jobs:
         uses: actions/checkout@v1
 
       - name: Cache cargo registry
-        uses: actions/cache@v1
+        uses: actions/cache@v4
         with:
           path: ~/.cargo/registry
           key: ${{ runner.os }}-cargo-registry-${{ hashFiles('Cargo.lock') }}
 
       - name: Cache cargo index
-        uses: actions/cache@v1
+        uses: actions/cache@v4
         with:
           path: ~/.cargo/git
           key: ${{ runner.os }}-cargo-index-${{ hashFiles('Cargo.lock') }}